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P0455 Code large leake

joelouis1901

New Member
Law Enforcement
Messages
1
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0
Points
1
Location
San Antonio
Vehicle
2021 Explorer St
#1
Hows it going fellas, have a 21 with about 37k miles. Engine light came on and also got the message on the ford pass app that an emissions issue is wrong with the car.

I ran the code and got a P0456 and P0455 code, replaced the purge valve with an autozone one. Few weeks later code came back up but now every few starts it has a rough idle and then appears to struggle and the stalls. ill get a “manual restart” message on the screen.

Anyone had an issue like this before?
 

ZephWolf

New Member
Firefighter
Messages
1
Reactions
0
Points
1
Location
Georgia
Vehicle
2020 Explorer St
#2
I would like to know as well. I was told to check the capless gas flap as well. Make sure it's sealed. But I too am getting the same code. I figure it was from my aftermarket intake. Keep me posted if you find anything as well, please. Thanks
 

BuckStrickland

Member
Law Enforcement
Messages
88
Reactions
39
Points
17
Location
West Virginia
Vehicle
2026 Explorer ST
#3
This is something that happens a lor with auto store purge valves, fixes for a while then fails within a few weeks. Get the ford part, and it will probably go away.

IF it doesn't, just let it be known that on my last ST, the dealer changed my entire emissions related system to the tune of 5K... they performed a smoke test and found it was leaking everywhere.
 

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